JP2003291200A - Method and device for measuring physical property of plastic composition - Google Patents

Method and device for measuring physical property of plastic composition

Info

Publication number
JP2003291200A
JP2003291200A JP2002103477A JP2002103477A JP2003291200A JP 2003291200 A JP2003291200 A JP 2003291200A JP 2002103477 A JP2002103477 A JP 2002103477A JP 2002103477 A JP2002103477 A JP 2002103477A JP 2003291200 A JP2003291200 A JP 2003291200A
Authority
JP
Japan
Prior art keywords
extruder
raw material
plastic composition
measuring
physical property
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2002103477A
Other languages
Japanese (ja)
Other versions
JP3820381B2 (en
Inventor
Masanori Tatsumi
昌典 辰巳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RES LAB OF PLASTICS TECHNOLOGY
RESEARCH LABORATORY OF PLASTICS TECHNOLOGY CO Ltd
Original Assignee
RES LAB OF PLASTICS TECHNOLOGY
RESEARCH LABORATORY OF PLASTICS TECHNOLOGY CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RES LAB OF PLASTICS TECHNOLOGY, RESEARCH LABORATORY OF PLASTICS TECHNOLOGY CO Ltd filed Critical RES LAB OF PLASTICS TECHNOLOGY
Priority to JP2002103477A priority Critical patent/JP3820381B2/en
Publication of JP2003291200A publication Critical patent/JP2003291200A/en
Application granted granted Critical
Publication of JP3820381B2 publication Critical patent/JP3820381B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/922—Viscosity; Melt flow index [MFI]; Molecular weight
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92238—Electrical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92266—Mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/924—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92438—Conveying, transporting or storage of articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92695—Viscosity; Melt flow index [MFI]; Molecular weight
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92733—Electrical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92761—Mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92933—Conveying, transporting or storage of articles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for measuring physical property of plastic composition capable of finding an optimum blending ratio of raw materials in a short time, conducting merchandise development in a short time and reducing energy cost and material cost required for the merchandise development. <P>SOLUTION: A plurality of raw materials are charged into an extruder while changing the blending ratio at a specified change ratio according to a specified lapse of time. The plastic composition having its different blending ratio is molten and kneaded and is made into a desired shape and is continuously extruded from the tip of the extruder in the longitudinal direction in a stepless or stepwise manner. Respective specified physical properties are measured at a plurality of predetermined blending ratio portions of the plastic composition in a molten state in the extruder and/or extruded from the extruder. <P>COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、プラスチック組成
物の物性測定方法および物性測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for measuring physical properties of plastic compositions.

【０００２】[0002]

【従来の技術】複数種のプラスチックや充填材等の複数
種の原料をブレンドして優れた物性の新しい商品を開発
しようとする場合、図３に示すような流れで商品開発が
行われるが、近年、商品寿命（高利益が得られる期間）
の短命化、ビジネススピードのアップに伴い開発速度を
上げ、短期間での商品開発が要求されつつある2. Description of the Related Art When a plurality of raw materials such as plastics and fillers are blended to develop a new product having excellent physical properties, the product development is performed according to the flow shown in FIG. In recent years, product life (period of high profit)
The development speed is increasing due to the shortening of life and business speed, and product development in a short period of time is required.

【０００３】しかしながら、従来、このような適正な配
合割合は、複数のプラスチックやその他の添加物の混合
割合が段階的に異なる複数種のペレットを予め作製して
おき、各ペレット毎に射出成形機あるいは押出成形機を
用いてテストピースを作製し、このテストピースの物性
を測定し、そのテスト結果をプロットするなどして求め
るようにしているため、最適な条件を求めるのに時間が
かかりすぎるとともに、エネルギーコストや材料コスト
がかかるという問題がある。しかも、測定数は、測定項
目数の乗数であるので、測定項目が増えれば測定数が増
え、測定項目が増えれば増えるほど、最良の配合割合を
求めるのに時間がかかる。However, conventionally, such an appropriate mixing ratio has been prepared in advance by preparing a plurality of types of pellets in which the mixing ratios of a plurality of plastics and other additives are stepwise different, and an injection molding machine for each pellet. Alternatively, since a test piece is manufactured using an extrusion molding machine, the physical properties of this test piece are measured, and the test results are plotted to obtain the optimum conditions, it takes too much time to obtain the optimum conditions. However, there is a problem that energy cost and material cost are required. Moreover, since the number of measurements is a multiplier of the number of measurement items, the number of measurements increases as the number of measurement items increases, and the more the number of measurement items increases, the more time it takes to obtain the best mixing ratio.

【０００４】[0004]

【発明が解決しようとする課題】本発明は、以上のよう
な事情に鑑みて、短時間で原料の最適な配合割合を見つ
けることができ、商品開発が短時間でできるとともに、
商品開発にかかるエネルギーコストや材料コストを低減
できるプラスチック組成物の物性測定方法および物性測
定装置を提供することを目的としている。In view of the above-mentioned circumstances, the present invention can find the optimum blending ratio of raw materials in a short time, and can develop a product in a short time.
An object of the present invention is to provide a physical property measuring method and a physical property measuring device for a plastic composition, which can reduce energy costs and material costs for product development.

【０００５】[0005]

【課題を解決するための手段】上記目的を達成するため
に、本発明にかかるプラスチック組成物の物性測定方法
は、複数の原料を所定時間の経過に伴ってその配合割合
を所定変化割合で変化させながら押出機に投入し、溶融
混練して押出機先端から長手方向に無段階または段階的
にその配合割合が異なるプラスチック組成物を所望形状
にして連続的に押し出すとともに、押出機内の溶融状態
のプラスチック組成物および/または押出機から押し出
されたプラスチック組成物の予め設定された複数の配合
割合部分でそれぞれ所定の物性を測定することを特徴と
している。In order to achieve the above-mentioned object, the method for measuring the physical properties of a plastic composition according to the present invention is such that the blending ratio of a plurality of raw materials is changed at a predetermined change ratio with the lapse of a predetermined time. While being put into the extruder, melt-kneading and continuously extruding plastic compositions having different blending ratios stepwise or stepwise from the tip of the extruder in the desired shape and continuously extruding the molten state in the extruder. It is characterized in that predetermined physical properties are respectively measured at a plurality of preset compounding ratio portions of the plastic composition and / or the plastic composition extruded from the extruder.

【０００６】一方、本発明にかかるプラスチック組成物
の物性測定装置は、押出機と、この押出機の原料供給口
に原料を供給する供給速度可変の複数台の原料供給装置
と、各原料供給装置の供給速度を無段階または段階的に
変化させる速度制御手段と、押出機で溶融混練されたプ
ラスチック組成物の所定の物性を押出機内および/また
は押出機から押し出された状態で無段階または段階的に
測定する少なくとも1台の物性測定手段とを備えること
を特徴としている。On the other hand, an apparatus for measuring the physical properties of a plastic composition according to the present invention comprises an extruder, a plurality of raw material supply devices having variable supply speeds for supplying the raw material to the raw material supply port of the extruder, and each raw material supply device. A speed control means for steplessly or stepwise changing the supply rate of the, and a predetermined physical property of the plastic composition melt-kneaded in the extruder in the extruder and / or in a state of being extruded from the extruder in a stepless or stepwise manner. And at least one physical property measuring means for measuring

【０００７】本発明において物性とは、例えば、強度、
透明性、充填物の分散度、分散状態、粘度、機能性、安
定度等を意味する。In the present invention, the physical properties include, for example, strength,
It means transparency, dispersity of filler, dispersion state, viscosity, functionality, stability and the like.

【０００８】[0008]

【発明の実施の形態】以下に、本発明を、その実施の形
態をあらわす図面を参照しつつ詳しく説明する。図１
は、本発明にかかる物性測定装置の１つの実施の形態を
表している。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the drawings showing the embodiments thereof. Figure 1
Shows one embodiment of a physical property measuring apparatus according to the present invention.

【０００９】図１に示すように、この物性測定装置１
は、１台の押出機２と、金型３と、２台の固体原料供給
装置４ａ，４ｂと、液体原料供給装置５と、炭酸ガス供
給装置６と、真空脱気装置７と、制御装置８と、冷却装
置１１と、物性測定手段としての溶融見掛け粘度測定装
置９１、法線応力測定装置９２、ＦＴＩＲ測定器９３、
ＣＣＤ分散測定器９４、荷重−変位測定器９５、電気抵
抗測定器９６を備えている。押出機２は、シリンダ２０
と、トルク計２１と、樹脂圧力樹脂温度センサ２２とを
備え、シリンダ２が入り口側に固体原料供給口２３を有
し、押出機先端に向かって、液体原料供給口２４、炭酸
ガス供給口２５、ガス排気口２６を備えている。As shown in FIG. 1, this physical property measuring apparatus 1
Is one extruder 2, a mold 3, two solid raw material supply devices 4a and 4b, a liquid raw material supply device 5, a carbon dioxide gas supply device 6, a vacuum degassing device 7, and a control device. 8, a cooling device 11, a melting apparent viscosity measuring device 91 as a physical property measuring means, a normal stress measuring device 92, an FTIR measuring device 93,
A CCD dispersion measuring device 94, a load-displacement measuring device 95, and an electric resistance measuring device 96 are provided. The extruder 2 has a cylinder 20.
And a torque meter 21 and a resin pressure resin temperature sensor 22, the cylinder 2 has a solid raw material supply port 23 on the inlet side, and a liquid raw material supply port 24 and a carbon dioxide gas supply port 25 are directed toward the tip of the extruder. , A gas exhaust port 26.

【００１０】また、押出機２の先端部には図示していな
いがギヤポンプが取り付けられ押出機先端圧力調整を行
い混練の調整を行えるようになっている。固体原料供給
口２３には、後で詳述する２台の固体原料供給装置４
ａ，４ｂから固体原料がそれぞれ供給されるようになっ
ている。A gear pump (not shown) is attached to the tip of the extruder 2 so that the pressure at the tip of the extruder can be adjusted to adjust kneading. The solid raw material supply port 23 has two solid raw material supply devices 4 which will be described in detail later.
Solid raw materials are respectively supplied from a and 4b.

【００１１】液体原料供給口２４は、後で詳述する液体
原料供給装置５に接続されていて液体原料供給装置５か
ら液体原料をシリンダ２０内に供給できるようになって
いる。炭酸ガス供給口２５には、後で詳述する炭酸ガス
供給装置６に接続されていて炭酸ガス供給装置６から炭
酸ガスが供給されるようになっている。The liquid raw material supply port 24 is connected to the liquid raw material supply device 5 which will be described later in detail, and is capable of supplying the liquid raw material from the liquid raw material supply device 5 into the cylinder 20. The carbon dioxide gas supply port 25 is connected to a carbon dioxide gas supply device 6, which will be described in detail later, so that carbon dioxide gas is supplied from the carbon dioxide gas supply device 6.

【００１２】ガス排気口２６は、真空脱気装置７に接続
されていて、真空脱気装置７からの吸引によってシリン
ダ２０内のガスを排気できるようになっている。金型３
は、押出機２の出口に配置され押出機２から供給される
溶融状態の樹脂組成物を幅方向に均一な厚みのシート状
に成形するようになっていて、樹脂圧調整バルブ３１を
備えている。The gas exhaust port 26 is connected to the vacuum degassing device 7, and the gas in the cylinder 20 can be exhausted by suction from the vacuum degassing device 7. Mold 3
Is configured to form a molten resin composition which is disposed at the outlet of the extruder 2 and is supplied from the extruder 2 into a sheet having a uniform thickness in the width direction, and includes a resin pressure adjusting valve 31. There is.

【００１３】２台の固体原料供給装置４ａ，４ｂは、重
量式それぞれ無段階で供給速度を変更できるようになっ
ていて、その排出口が押出機２の固体原料供給口２３に
臨んでいる。液体原料供給装置５は、原料タンク５１
と、無段階で供給速度を変更できる定量ポンプ５２とを
備えている。The two solid raw material supply devices 4a and 4b are of a weight type and can change the supply speed in a stepless manner, and their discharge ports face the solid raw material supply port 23 of the extruder 2. The liquid raw material supply device 5 includes a raw material tank 51.
And a metering pump 52 capable of continuously changing the supply rate.

【００１４】炭酸ガス供給装置６は、ガスボンベ６１
と、定量供給手段６２とを備え、炭酸ガスを定量供給で
きるようになっている。制御装置８は、運転条件制御手
段８１と、配合制御手段８２と、解析データ処理手段８
３とを備えている。The carbon dioxide gas supply device 6 includes a gas cylinder 61.
And a constant amount supply means 62, so that a constant amount of carbon dioxide gas can be supplied. The control device 8 includes operating condition control means 81, blending control means 82, and analysis data processing means 8
3 and 3.

【００１５】運転条件制御手段８１は、成形温度、押出
機２のスクリュー回転数、真空脱気装置７の真空度、先
端樹脂圧力などを制御するようになっている。配合制御
手段８２は、２台の固体原料供給装置の供給速度をコン
トロールして両固体原料の配合割合を時間とともに変化
させるようになっている。The operating condition control means 81 controls the molding temperature, the screw rotation speed of the extruder 2, the vacuum degree of the vacuum degassing device 7, the tip resin pressure, and the like. The blending control means 82 controls the feed rates of the two solid raw material feed devices to change the blending ratio of both solid raw materials with time.

【００１６】解析データ処理手段８３は、配合制御手段
８２による配合割合の変化および運転条件制御手段８１
の制御される運転条件によって得られた各物性測定手段
により得られた測定データベースを基にして２次元的ま
たは３次元的に解析し、特異点（特異面、特異空間）を
見い出すようになっている。冷却装置１１は、金型３か
ら連続的に押し出されるサンプルを冷却固化させるよう
になっている。The analysis data processing means 83 includes means for changing the blending ratio by the blending control means 82 and operating condition control means 81.
The two-dimensional or three-dimensional analysis is performed based on the measurement database obtained by each physical property measurement means obtained under the controlled operating conditions of No. 1, and singular points (singular planes, singular spaces) are found. There is. The cooling device 11 cools and solidifies the sample continuously extruded from the mold 3.

【００１７】そして、この物性測定装置１は、たとえ
ば、固体プラスチック原料Ａ（以下、「原料Ａ」と記
す）と、固体プラスチック原料Ｂ（以下、「原料Ｂ」と
記す）とをブレンドしたプラスチック組成物の配合割合
による物性の変化を以下のようにして測定することがで
きる。The physical property measuring apparatus 1 is, for example, a plastic composition obtained by blending a solid plastic raw material A (hereinafter referred to as "raw material A") and a solid plastic raw material B (hereinafter referred to as "raw material B"). The change in physical properties depending on the compounding ratio of the substance can be measured as follows.

【００１８】すなわち、一方の固体原料供給装置４ａか
ら原料Ａを、他方の固体原料供給装置から原料Ｂをそれ
ぞれ押出機２に供給できるようにするとともに、運転条
件制御手段８１によって押出機２の運転条件を制御しな
がら、図２に示すように、まず、原料Ａが１００％、原
料Ｂが０％の配合割合で供給を開始し、原料Ａと原料Ｂ
との合計が１００％となる状態を保ちながら、原料Ａの
割合が０％になり、原料Ｂの割合が１００％になるま
で、両原料Ａ，Ｂの供給量を時間の経過に伴って無段階
で変化させながら押出機２に供給する。That is, the raw material A can be supplied to the extruder 2 from one solid raw material supply device 4a and the raw material B can be supplied to the extruder 2 from the other solid raw material supply device, and the extruder 2 is operated by the operating condition control means 81. As shown in FIG. 2, while controlling the conditions, first, the supply of raw material A was started at a mixing ratio of 100% and raw material B was 0%, and raw material A and raw material B were mixed.
While keeping the total of 100% and the ratio of the raw material A to 0% and the ratio of the raw material B to 100%, the supply amounts of both the raw materials A and B are not changed with the passage of time. It is fed to the extruder 2 while being changed in stages.

【００１９】そして、溶融見掛け粘度測定装置９１、法
線応力測定装置９２、ＦＴＩＲ測定器９３、ＣＣＤ分散
測定器９４、荷重−変位測定器９５、電気抵抗測定器９
６等の物性測定手段によって押出機２内で溶融混練され
た溶融状態のプラスチック組成物あるいは金型３から押
し出されて冷却装置１１で冷却固化されたプラスチック
組成物Ｐの引張強さ、破断伸び、曲げ強さ、弾性率（引
張、曲げ）、衝撃強さ、摩擦係数、磨耗量、熱変形温
度、水蒸気透過度、ガス透過度、難燃性、耐候性、生分
解性などの機械的あるいは熱的性質を連続的に測定す
る。同時にこの測定結果と、各物性測定手段の各測定値
の測定時に各物性測定手段の位置にあるプラスチック組
成物の理論配合割合と測定データベース８４に送り、解
析データ処理手段８３によって解析し、適正な成形条件
を求めるようになっている。なお、従来、これらの物性
は概ねオフライン測定されており、上記の物性測定手段
のなかには、オフラインの場合と同じ基準（測定方法）
で測定できないものもあるが、このような場合、測定器
間換算係数などを利用して補正することができる。Then, a melt apparent viscosity measuring device 91, a normal stress measuring device 92, an FTIR measuring device 93, a CCD dispersion measuring device 94, a load-displacement measuring device 95, an electric resistance measuring device 9
Tensile strength and elongation at break of the plastic composition in the molten state melt-kneaded in the extruder 2 by the physical property measuring means 6 or the like, or the plastic composition P extruded from the mold 3 and cooled and solidified by the cooling device 11. Bending strength, elastic modulus (tensile, bending), impact strength, friction coefficient, wear amount, heat deformation temperature, water vapor permeability, gas permeability, flame resistance, weather resistance, biodegradability, etc. The physical properties are continuously measured. At the same time, this measurement result and the measured value of each physical property measuring means are sent to the theoretical composition ratio and the measurement database 84 of the plastic composition at the position of each physical property measuring means, and analyzed by the analysis data processing means 83 to obtain an appropriate value. It is designed to determine molding conditions. Conventionally, these physical properties are generally measured off-line, and some of the above-mentioned physical property measuring means have the same criteria (measurement method) as the case of off-line.
However, in such a case, it is possible to make a correction by using a conversion coefficient between measuring instruments.

【００２０】なお、測定タイミングは、成形条件によっ
て時間遅れ要素があるため、十分考慮しなければならな
い。また、図１中、Ｐはプラスチック組成物である。Since the measurement timing has a time delay element depending on molding conditions, it must be sufficiently considered. Moreover, in FIG. 1, P is a plastic composition.

【００２１】上記物性測定装置１およびこの物性測定装
置１を用いた物性測定方法によれば、時間とともに無段
階で連続的にプラスチック組成物の配合割合を変化させ
ながら押出機２内からその配合割合が押出方向で無段階
で変化するプラスチック組成物を押し出し、押出機２内
のプラスチック組成物あるいは押出機２から押し出され
るプラスチック組成物の各配合割合ごとの物性を連続的
に測定することができる。すなわち、従来のように配合
割合の異なるペレットを多数作製し、このペレットを用
いて作製したテストピースの物性をそれぞれ測定すると
いう複雑な工程を必要としない。したがって、従来に比
べ極めて短時間で、どの配合割合のとき、必要とする物
性を達成できるかを簡単に確認することができる。そし
て、ビジネスチャンスを逃すことなく新商品を送り出す
ことができる。また、物性測定に使用する原料の量も少
なくて済み、資源コスト、エネルギーコストも低減でき
る。According to the above-mentioned physical property measuring device 1 and the physical property measuring method using this physical property measuring device 1, the compounding ratio of the plastic composition is continuously changed steplessly with time from the inside of the extruder 2. It is possible to continuously measure the physical properties of the plastic composition in the extruder 2 or the plastic composition extruded from the extruder 2 for each compounding ratio by extruding a plastic composition in which the value changes steplessly in the extrusion direction. That is, unlike the conventional method, a complicated process of producing a large number of pellets having different blending ratios and measuring the physical properties of the test pieces produced using the pellets is not required. Therefore, it is possible to easily confirm at what mixing ratio the required physical properties can be achieved in an extremely short time as compared with the conventional case. And new products can be delivered without missing business opportunities. In addition, the amount of raw materials used for physical property measurement is small, and resource costs and energy costs can be reduced.

【００２２】さらに、上記物性測定装置１は、液体原料
供給装置５を備えているので、固体原料のみからなるプ
ラスチック組成物だけでなく、液体原料も含む原料から
なるプラスチック組成物の物性測定もできる。また、複
数の物性測定手段を備えているので、より短時間で緻密
な物性測定が可能となる。Further, since the above-mentioned physical property measuring device 1 is provided with the liquid raw material supply device 5, not only the plastic composition consisting only of the solid raw material but also the plastic property consisting of the raw material including the liquid raw material can be measured. . In addition, since a plurality of physical property measuring means are provided, precise physical property measurement can be performed in a shorter time.

【００２３】炭酸ガス供給装置６を備えているので、炭
酸ガスによるプラスチックの可塑状態の変化、充填材の
分散特性、炭酸ガスを発泡剤として用いる場合の特性等
も測定することができる。Since the carbon dioxide gas supply device 6 is provided, it is possible to measure changes in the plastic state of the plastic due to carbon dioxide gas, the dispersion characteristics of the filler, the characteristics when carbon dioxide gas is used as a foaming agent, and the like.

【００２４】本発明は、上記の実施の形態に限定されな
い。たとえば、上記の実施の形態では、２台の固体原料
原料供給装置４ａ、４ｂから異なる２種類の固体原料
Ａ，Ｂを押出機２に供給できるようにしているが、３台
以上の固体原料供給装置を設け、３種類以上の固体原料
を押出機２に供給できるようにしても構わない。上記の
実施の形態では、２種類の固体原料の供給速度を無段階
で変化させ、配合割合を無段階に変化させるようになっ
ているが、段階的に変化させるようにしても構わない。
また、段階的に配合割合等の成形条件を変化させる場
合、条件切り換え前後で原料中に目印の顔料等を混ぜる
ようにしても構わない。The present invention is not limited to the above embodiment. For example, in the above-described embodiment, two different types of solid raw materials A and B can be supplied to the extruder 2 from the two solid raw material feed devices 4a and 4b. A device may be provided so that three or more kinds of solid raw materials can be supplied to the extruder 2. In the above embodiment, the supply rates of the two kinds of solid raw materials are changed steplessly and the blending ratio is changed steplessly, but it may be changed stepwise.
Further, when the molding conditions such as the blending ratio are changed stepwise, the mark or the like may be mixed in the raw material before and after the switching of the conditions.

【００２５】また、液体原料供給装置５や、炭酸ガス供
給装置６は設けなくても構わない。上記の実施の形態で
は、物性測定手段としての溶融見掛け粘度測定装置９
１、法線応力測定装置９２、ＦＴＩＲ測定器９３、ＣＣ
Ｄ分散測定器９４、荷重−変位測定器９５、電気抵抗測
定器９６を備えているが、物性測定手段は、測定する物
性にあっものを適宜選択でき、たとえば、測定速度をさ
らに上げるために、同じ種類に物性測定手段を押出機の
押出方向の異なる複数箇所に設けるようにしても構わな
い。Further, the liquid raw material supply device 5 and the carbon dioxide gas supply device 6 may not be provided. In the above-described embodiment, the melting apparent viscosity measuring device 9 as the physical property measuring means.
1. Normal stress measuring device 92, FTIR measuring device 93, CC
Although the D dispersion measuring instrument 94, the load-displacement measuring instrument 95, and the electrical resistance measuring instrument 96 are provided, the physical property measuring means can appropriately select the physical property to be measured, and for example, in order to further increase the measuring speed, The physical property measuring means of the same type may be provided at a plurality of locations in different extrusion directions of the extruder.

【００２６】上記の実施に形態では、金型３で幅方向に
均一な厚みのシート状に押出成形するようにしていた
が、幅方向の一方から他方に向かって徐々に厚みが増加
するような形状のシート状に押出成形するようにしても
構わない。幅方向に厚みを変えるようにすれば、同じ配
合割合の場合の光の透過度なども同時に測定したりする
ことができる。In the above embodiment, the die 3 was extruded into a sheet having a uniform thickness in the width direction, but the thickness gradually increases from one side to the other side in the width direction. The sheet may be extruded into a sheet shape. By changing the thickness in the width direction, it is possible to measure the light transmittance and the like at the same mixing ratio.

【００２７】[0027]

【実施例】以下に、本発明の具体的な実施例を説明す
る。EXAMPLES Specific examples of the present invention will be described below.

【００２８】（実施例１）図１に示す固体原料供給装置
４ａにＰＣ樹脂（ポリカーボネート）ペレットを投入す
るとともに、固体原料供給装置４ｂに液晶樹脂を投入
し、図３に示すように、まず、３０分間ＰＣ樹脂を押出
機２に１００％の割合で供給したのち、その後１２０分
掛けて、ＰＣ樹脂と液晶樹脂との合計が１００％の状態
を保ちながら、ＰＣ樹脂が０％、液晶樹脂が１００％に
なるように無段階で供給量を変化させた。そして、押出
機２に設けられた溶融見掛け粘度測定装置９１よって見
掛粘度の変化を測定し、その結果を図４に示した。(Example 1) PC resin (polycarbonate) pellets were charged into the solid raw material supply device 4a shown in FIG. 1 and liquid crystal resin was charged into the solid raw material supply device 4b, and as shown in FIG. After supplying the PC resin to the extruder 2 at a rate of 100% for 30 minutes, 120 minutes thereafter, while maintaining the state where the total of the PC resin and the liquid crystal resin was 100%, the PC resin was 0% and the liquid crystal resin was The supply amount was changed steplessly so as to be 100%. Then, a change in apparent viscosity was measured by a melt apparent viscosity measuring device 91 provided in the extruder 2, and the result is shown in FIG.

【００２９】図４中、ｔ1は原料が供給口２１から押出
機２に投入され、溶融混練されたプラスチック組成物が
溶融見掛け粘度測定装置９１のところまで達する時間遅
れ、ｔ2は粘度変化が発生してから特異点が発生するま
での時間を意味している。そして、図３から測定開始時
からｔ2分後の混合割合がＰＣ樹脂／液晶樹脂＝９５／
５であることから高粘度のＰＣ樹脂に５％の液晶樹脂を
５％配合することによって成形性が向上することが確認
できた。In FIG. 4, t 1 is a time delay in which the raw material is fed into the extruder 2 from the supply port 21 and the melt-kneaded plastic composition reaches the melt apparent viscosity measuring device 91, and t 2 is a change in viscosity. It means the time from the occurrence to the occurrence of the singularity. From FIG. 3, the mixing ratio after t 2 minutes from the start of measurement is PC resin / liquid crystal resin = 95 /
Since it was 5, it was confirmed that the moldability was improved by adding 5% of 5% liquid crystal resin to the high-viscosity PC resin.

【００３０】すなわち、配合割合の異なるペレットを作
製し、このペレットをフローテスタなどにより粘度測定
する従来の測定方法に比べ、約１／２０の測定時間であ
る１５０分程度の短時間で測定が完了できた。That is, as compared with the conventional measuring method in which pellets having different blending ratios are prepared and the viscosity of the pellets is measured by a flow tester or the like, the measurement is completed in a short time of about 150 minutes, which is a measuring time of about 1/20. did it.

【００３１】[0031]

【発明の効果】本発明にかかる物性測定方法は、以上の
ように構成されているので、短時間で原料の最適な配合
割合を見つけることができ、商品開発が短時間でできる
とともに、商品開発にかかるエネルギーコストや材料コ
ストを低減できる。Since the method for measuring physical properties according to the present invention is configured as described above, it is possible to find the optimum blending ratio of raw materials in a short time, which enables product development in a short time and product development. It is possible to reduce energy cost and material cost for

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明にかかるプラスチック組成物の物性測定
装置の１つの実施の形態を説明する模式図である。FIG. 1 is a schematic view illustrating one embodiment of a physical property measuring apparatus for a plastic composition according to the present invention.

【図２】図１の物性測定装置の押出機に投入される２つ
の固体原料の時間変化に伴う配合割合の変化の１例をあ
らわすグラフである。FIG. 2 is a graph showing an example of changes in the blending ratio of two solid raw materials charged into the extruder of the physical property measuring apparatus of FIG. 1 with time.

【図３】実施例のプラスチック組成物の時間経過に伴う
配合割合の変化をあらわすグラフである。FIG. 3 is a graph showing changes in the blending ratio of the plastic compositions of the examples over time.

【図４】図３の配合変化させた場合の見掛粘度の変化を
あらわすグラフである。FIG. 4 is a graph showing a change in apparent viscosity when the composition of FIG. 3 is changed.

【図５】商品開発の流れを示すフロー図である。FIG. 5 is a flowchart showing the flow of product development.

【符号の説明】[Explanation of symbols]

Ｐ プラスチック組成物 １ 物性測定装置 ２ 押出機 ２３ 固体原料供給口 ２４ 液体原料供給口 ２５ 炭酸ガス供給口 ４ａ、４ｂ 固体原料供給装置 ５ 液体原料供給装置 ６ 炭酸ガス供給装置 ９１ 溶融見掛け粘度測定装置（物性測定手段） ９２ 法線応力測定装置（物性測定手段） ９３ ＦＴＩＲ測定器（物性測定手段） ９４ ＣＣＤ分散測定器（物性測定手段） ９５ 荷重−変位測定器（物性測定手段） ９６ 電気抵抗測定器（物性測定手段） P plastic composition 1 Physical property measuring device 2 extruder 23 Solid material supply port 24 Liquid raw material supply port 25 Carbon dioxide gas supply port 4a, 4b solid raw material supply device 5 Liquid raw material supply device 6 Carbon dioxide gas supply device 91 Melting apparent viscosity measuring device (physical property measuring means) 92 Normal stress measuring device (physical property measuring means) 93 FTIR measuring device (physical property measuring means) 94 CCD dispersion measuring instrument (physical property measuring means) 95 Load-displacement measuring device (physical property measuring means) 96 Electric resistance measuring instrument (physical property measuring means)

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】複数の原料を所定時間の経過に伴ってその
配合割合を所定変化割合で変化させながら押出機に投入
し、溶融混練して押出機先端から長手方向に無段階また
は段階的にその配合割合が異なるプラスチック組成物を
所望形状にして連続的に押し出すとともに、押出機内の
溶融状態のプラスチック組成物および/または押出機か
ら押し出されたプラスチック組成物の予め設定された複
数の配合割合部分でそれぞれ所定の物性を測定すること
を特徴とするプラスチック組成物の物性測定方法。1. A plurality of raw materials are charged into an extruder while changing the blending ratio thereof at a predetermined change ratio with the lapse of a predetermined time, melt-kneaded, and steplessly or stepwise in the longitudinal direction from the tip of the extruder. While continuously extruding plastic compositions having different blending ratios into desired shapes, a plurality of preset blending ratio parts of the plastic composition in a molten state in the extruder and / or the plastic composition extruded from the extruder A method for measuring physical properties of a plastic composition, comprising measuring predetermined physical properties according to 1. 【請求項２】押出機と、この押出機の原料供給口に原料
を供給する供給速度可変の複数台の原料供給装置と、各
原料供給装置の供給速度を無段階または段階的に変化さ
せる速度制御手段と、押出機で溶融混練されたプラスチ
ック組成物の所定の物性を押出機内および/または押出
機から押し出された状態で無段階または段階的に測定す
る少なくとも1台の物性測定手段とを備えることを特徴
とするプラスチック組成物の物性測定装置。2. An extruder, a plurality of raw material supply devices having variable supply speeds for supplying a raw material to a raw material supply port of the extruder, and a speed at which the supply speed of each raw material supply device is changed steplessly or stepwise. Control means, and at least one physical property measuring means for steplessly or stepwise measuring predetermined physical properties of the plastic composition melt-kneaded by the extruder in and / or extruded from the extruder An apparatus for measuring physical properties of a plastic composition, comprising:
JP2002103477A 2002-04-05 2002-04-05 Method and apparatus for measuring physical properties of plastic composition Expired - Lifetime JP3820381B2 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004351930A (en) * 2003-05-02 2004-12-16 Kohei Sawa Multiscrew kneading device and method of kneading material
JP2006103316A (en) * 2004-09-10 2006-04-20 Toyo Seiki Seisakusho:Kk Forming workability evaluation system and its method
JP2007076208A (en) * 2005-09-15 2007-03-29 Japan Steel Works Ltd:The Method and apparatus of manufacturing thermoplastic resin foam
CN103786332A (en) * 2014-01-03 2014-05-14 天津金发新材料有限公司 Plastic extruder fused strip detection method and detector
EP4023414A1 (en) * 2020-12-29 2022-07-06 Ecoo B.V. Producing a plastic product
CN115503203A (en) * 2021-06-23 2022-12-23 四川大学 Method for screening fully-degradable intravascular stent material based on material genome method
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004351930A (en) * 2003-05-02 2004-12-16 Kohei Sawa Multiscrew kneading device and method of kneading material
JP4495510B2 (en) * 2003-05-02 2010-07-07 宏平 澤 Multi-axis kneading apparatus and material kneading method
JP2006103316A (en) * 2004-09-10 2006-04-20 Toyo Seiki Seisakusho:Kk Forming workability evaluation system and its method
JP2007076208A (en) * 2005-09-15 2007-03-29 Japan Steel Works Ltd:The Method and apparatus of manufacturing thermoplastic resin foam
JP4532374B2 (en) * 2005-09-15 2010-08-25 株式会社日本製鋼所 Method and apparatus for producing thermoplastic resin foam
CN103786332A (en) * 2014-01-03 2014-05-14 天津金发新材料有限公司 Plastic extruder fused strip detection method and detector
CN103786332B (en) * 2014-01-03 2016-02-10 天津金发新材料有限公司 A kind of plastic extruder fusing bar detection method and checkout gear
JP7488734B2 (en) 2020-09-15 2024-05-22 住友化学株式会社 Acrylic resin film manufacturing method and acrylic resin film manufacturing device
EP4023414A1 (en) * 2020-12-29 2022-07-06 Ecoo B.V. Producing a plastic product
BE1028967B1 (en) * 2020-12-29 2022-08-01 Ecoo B V Production of plastic product
CN115503203A (en) * 2021-06-23 2022-12-23 四川大学 Method for screening fully-degradable intravascular stent material based on material genome method

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